Other variants listed include the DLXPLUS_UL (DLXP_UL) which is expected to be an LTE enabled model with a part number of PO68200. Lastly is the DLXPLUS_U (DLXP_U) which has a part number of PO68220. This is believed to be a model of the HTC Butterfly 2 with support for CDMA and WCDMA networks and as such, would be the global version of the device.
In Japan, HTC released the HTC Butterfly J last year. Therefore, the DLXPLUS＿WLJ (DLXPLUS_J) would no doubt be the HTC Butterfly J 2 for Japanese carrier KDDI. All of the models will apparently be powered by the Qualcomm Snapdragon 600 according to the information from the testing.
Thanks Anonymous Tipster!
source: HTCSoku (translated) via GSMInsider
OTA testing of the HTC Butterfly reveals 3 variants of the sequel, plus a follow-up to the Japanese model